Hi, I would tell you that right now the agency may be bluffing about this whole blacklist thing. You HAVEN'T EVEN SET FOOT INTO CHINA YET, and they are already threatening to blacklist you??? I'd say if you are sure that you will receive the position at the other university AND you can get a legitimate Z Visa BEFORE going to that university then you should do it as soon as you can. The bureaucracy of the chinese government means that this whole blacklist thing may take up to a couple of months to happen.

If unfortunately you did get blacklisted, then the onus of this responsibility IS NOT ON YOU. It just goes to show the xenophobia of china in general and how hermit like the country is regarding the treatment of expats. The whole world is gradually finding out anyway that there is really nothing there of true value. The government and the agency that collaborated to do this to you would have just shown THE WORLD what a bunch of idiots they really are. Please take care.